The Preservation of Favoured Traces
Here’s a neat project by Ben Fry. It’s a visualization of the differences between the different editions of On the Origin of Species.
It’s a little like the tools that programmers use to manage differences in versions of software, but it is working from the text of Darwin’s book. It shows you where he made changes between editions and displays the edits when you move your mouse over them.
It’s written in Processing and uses the text from Darwin Online.